Food can become contaminated by bacteria from other foods. This type of cross-contamination is especially dangerous if raw foods come into contact with cooked foods.Here are some examples of food-to-food cross-contamination: 1  In a refrigerator, meat drippings from raw meat stored on a top shelf might drip onto cooked vegetables placed on lower shelf.ood can become contaminated by bacteria from other foods. This type of cross-contamination is especially dangerous if raw foods come into contact with cooked foods.
Best Answer: Putting batteries in the freezer or refrigerator doesn't necessarily prolong their life. Alkaline batteries stored at room temperature self discharge at a rate of less than two percent per year. So normally refrigerating or freezing them will only help maintain their charge by a tiny amount.
But if a battery is discharged because of damage to cells, poor connections or a charging system that isn't doing its job, the battery could start freezing at the same temperature as water. A 100 percent fully charged battery will not freeze until approximately minus 76 degrees Fahrenheit.A fully discharged battery can freeze at or around 32 degrees, Kimbrough said in a telephone interview. The difference between a fully charged and discharged 12-volt battery is not that big.Related: How to Store Your Car for Winter. When I'm talking about a fully discharged battery, I'm not talking about zero volts.nterstate says a car battery loses 33 percent of its power when the temperature drops below freezing and more than 50 percent when it goes below zero, so just when you need more power, you have less to start your car.